Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0595e4b45f52c9…

MALICIOUS

PDF

44.8 KB Created: 2021-06-10 22:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5dc8b81d3681e3402f6971906c9ab54c SHA-1: 6ace8d9be7eda423b58a010095373a704213da39 SHA-256: ff0595e4b45f52c92d1b56471b01602338cbca9b5740bb33f6887d6c8ff157df
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document exhibits characteristics of an advance-fee scam, using lures related to game hacks and prizes to entice users. It contains multiple embedded URLs pointing to potentially malicious content, including one directly associated with a 'roblox-speen-hack-game-hack'. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/roblox-speen-hack-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/metalmiami-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/exploit-free-roblox-not-win-rar_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005202.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5202 25460 bytes
SHA-256: c62301477631fdd86cd729e23bd11838f66793a0071b83e8b96b16c6b593c7f7
font_01_sfnt_off00008c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C37 18356 bytes
SHA-256: 5540e5f505b0648dca9ddac6148dd23b877c64320ca7bcc526640338dd7c6354

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